f/s fp flameproof float switch - deeter electronics ltd....diagram 1 90mm ~125mm cable gland port...

F/S FP Flameproof Float Switch

The Deeter F/S FP is magnetic float on a reed switch sensor stem for control and indication of a liquid level while in a potentially explosive atmosphere.

II 1/2G 2D

Ex db IIC (*) Ga/Gb -55°C≤Ta≤+85°C Ex tb IIIC (*) Db -40°C≤Ta≤+85°C IP68

II 2GD Ex db IIC (*) Gb -55°C≤Ta≤+85°C Ex tb IIIC (*) Db -40°C≤Ta≤+85°C IP68

* Temperature class options to suit environment and process temperatures T5 / T100oC for process temperatures ≤ 85°C T4 / T135oC for process temperatures ≤ 125°C T3 / T200oC for process temperatures ≤ 190°C

Atex Certificate: ExVeritas 17ATEX0301X

IECEx Certificate: IECEx EXV 17.0030X Refer to certificate for clarification of directive code and equipment protection level.

Features include:

ATEX and IECEx approved. Custom length sensor stems up to 6 Metres. Stainless steel 316 housing and wetted components. Up to 7 switch points on one stem. Custom made for mixed normally open/normally closed switches. Suitable for gas and dust environments. IP68 Ingress protection. Voltage free reed switch contacts. M20 or ½”NPT cable connections. Custom mounting options available. Narrow sensor stem and mounting for tanks without internal access. Suitable for high liquid temperatures. Can be specified for process temperatures down to -55°C


Note 1: When this equipment is intended to be used in a liquid with a process temperature above 85oC it is an essential requirement that the sensor head temperature is measured to determine if the ambient air cooling is sufficient to keep the head below 80oC. See installation manual for detail. Note 2: The F/S FP sensor float and tube can withstand the stated pressure when sealed inside a tank. The connection head and resin seal to the sensor stem must not be pressurised. The standard Zone 0 fittings are rated at 10bar, these fittings are not part of the certified flameproof seal and should not be considered as part of an explosion proof containment. Please call our technical sales department regarding sensors for liquid pressures up to 31bar. Note 3: The sum current drawn by all switch points must not exceed 1Amp total.

Type Specification Sensor technology Magnetic float with reed switch Sensor tube and wetted materials Stainless steel 316L Connection head material Stainless steel 316 IP rating with suitable cable gland IP68 Approximate weight: Ø12mm stem Ø8mm stem

1Kg +process connector + 0.5Kg/Metre 1Kg +process connector + 0.3Kg/Metre

Float Diameter: Specific gravity: Ø12mm stem Ø8mm stem

53mm : 0.65 30mm : 0.75

Other floats available

Maximum liquid temperature: Reed switch Hall Effect

-20 to +85oC -10 to +80oC

-55oC/-40oC or +125oC/+190oC on request

Maximum head temperature -55 to +80oC for Gas hazard -40 to +800C for Dust hazard

Note 1

Maximum operating pressure 150PSI / 10Bar standard 450PSI / 31Bar

Note 2

Thread connection-Sensor tube ½”-14 NPT Thread connection-Wiring port ½”-14 NPT or M20X1.5 Connection head height 95mm Switch rating: >4 point Reed switch <=4 point reed switch

0 to 50Vdc. 1Amp. 50Watts Max 0 to 240vac. 1Amp. 50Watts max

Note 3


Ordering information Due to the various options available please call our sales office to discuss your requirements. Options include: Probe length, Switch voltage, Switch point quantity, Switch point height, Threaded mounting/seal options, float sizes, 8 or 12mm sensor tube, cable entry thread. Upon receipt of the above information a drawing and Deeter part No. will be issued to identify the options selected. This part No. will be required when making your order. All electrical equipment should be installed by a qualified/certified electrician. Deeter Electronics Ltd. follows a policy of continual development of its products and reserves the right to change specifications and/or features without notice.

Standard float = Ø53mm. Ø30mm float for 8mm tube Other floats available

Water level switching point #1

Water level switching point #2

Up to 7 switching points

Standard switch orientation: Open circuit or digital low with float down

Total stem length

90mm

Cable gland port

95mm

Diagram 1

90mm

~125mm

Cable gland port

Minimum 40mm of liquid to lift Ø53mm float.

Diagram 2


Date of manufacture Date: X X First letter Second letter A = January R = 2017 B = February S = 2018 C = March T = 2019 D = April U = 2020 E = May V = 2021 F = June W = 2022 G = July X = 2023 H = August Y = 2024 I = September Z = 2025 J = October K = November L = December

Identification

The F/S FP sensors covered by this document can be identified by these labels attached to the sensor head. Both the head label and the sensor tube end stop are marked with their date of manufacture in the form of 2 letters. The S/N:xxxxxx is a unique serial No. given to each piece of equipment. The F/S FP:xxxxxx is a 6 digit model code. The model code is also the Deeter reference number of a drawing which identifies the electrical connections and custom mechanical dimensions. A copy of this drawing should be attached to this manual. The temperature class shown here as a * will be either T5/100oC, T4/135oC or T3/200oC Head labels

Deeter Electronics Ltd. High Wycombe UK WARNING Live parts behind cover Refer to manual for cable & cable gland selection WARNING: DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT. ATTENTION: NE PAS OUVRIR SI UNE ATMOSPHERE EXPLOSIVE PEUT ETRE PRESENTE

Date: X X S/N: X X X X X X F/S FP X X X X X X -55oC<Ta<+85oC -40oC<Ta<+85oC Ex db IIC T* Ga/Gb Ex tb IIIC T * 0C Db II 1/2G 2D 0518 IP68 ExVeritas 17ATEX0301X IECEx EXV17.0030X

Serial No. Model

Date: X X S/N: X X X X X X F/S FP X X X X X X -55oC<Ta<+85oC -40oC<Ta<+85oC Ex db IIC T* Gb Ex tb IIIC T * 0C Db II 2GD 0518 IP68 ExVeritas 17ATEX0301X IECEx EXV17.0030X

Deeter Electronics Ltd. High Wycombe UK WARNING Live parts behind cover Refer to manual for cable & cable gland selection WARNING: DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT. ATTENTION: NE PAS OUVRIR SI UNE ATMOSPHERE EXPLOSIVE PEUT ETRE PRESENTE

Serial No. Model

Sensors without a zone separation fitting

Sensors with a zone separation fitting


Instruction for mounting and wiring a F/S FP 1) This document details the installation of all versions of standard Deeter F/S FP and their optional mounting / zone seal. Separate documents are available for our LVCS FP analogue output sensors.

2) Do not open the lid or disconnect any part of the sensor when an explosive atmosphere may be present. This device must be installed in accordance with IEC/EN60079-14

3) F/S FP without a custom mounting option can be installed by suspending the sensor over the liquid as shown in diagram 3 and 4. Only F/S FP with a custom mounting, as shown in diagram 5 can be installed across a Zone 0 and Zone 1 boundary. It is essential that equipment mounted across a Zone 0 and Zone 1 boundary are installed with a sufficiently tight join in accordance with clause 4.6 of EN60079-26 to provide an IP67 seal between zones.

4) All versions of F/S FP must be mounted vertically ±50 with the head positioned so it will not become immersed in liquid during normal operation. A F/S FP with a liquid tight seal can be mounted from the bottom of a tank with the stem above the head if required. The magnetic float and sensor stem must be installed away from any magnetic field or ferrous materials which could influence its operation. Mounting and wiring must only be carried out in a safe environment.

5) All versions of F/S FP must be mounted where the ambient temperature will allow the sensor head to cool to below 80oC. This is especially significant where the process temperature is above 85oC.

6) The standard F/S FP sensor is supplied ready to mount through a 22.5mm hole in the top of a tank or onto a mounting bracket as shown in diagram 3. When the thickness of the tank or bracket exceeds 4mm thick ensure the head can be screwed onto the stem with a minimum of 5 revolutions and be wrench tight without gripping or being restricted by the bracket. Bracket thickness can never exceed 10mm.

Mounting bracket with 22.5mm slot

Standard mounting 22.5mm hole in tank

Maximum tank wall 10mm

Lid locking screw Lid locking screw

Diagram 3 Diagram 4

Maximum bracket thickness 10mm


7) Loosen the lid locking screw and unscrew the top of the head. Detach the wires going into the sensor stem by pulling the connector off the circuit board. Unscrew the stem from the head. Remove old PTFE tape and apply several layers of new PTFE tape to the male thread. As an alternative, a non setting grease according to EN 60079-1 clause 5.1 may be used to replace the PTFE tape. Failure to apply PTFE tape or grease may lead to thread galling and irreparable damage to this thread.

8) Mount the stem in the tank and screw the head back on top. Clamp the head and use a 24mm spanner on the stem hexagon to tighten the joint. Do not use grips on the tube or end stop. The head / stem joint must be tightened with a minimum of 5 revolutions of thread engagement. Ensure the stem is tight into the head and it has not gripped the mounting bracket or tank wall.

9) F/S FP with a custom mounting do not require the separation of the head and stem, but during installation the head/stem joint should be checked that it is secure as described above.

10) All F/S FP with custom mounting options are supplied with a drawing to identify the supplied fitting. The supplied mounting will enable the installer to screw or clamp the sensor into place. It is not possible to install a sensor by welding as the welding process will damage the sensors internal electronics. When tightening threaded pipe fittings as shown in diagram 5, do not use the grips on the stem or use the head as a leaver, always use a spanner on the pipe fitting.

Lid locking screw

LVCS FP with custom zone0 seal or fitting NPT or BSP

pipe fitting

Diagram 5


11) When a sensor is installed in a position where it may be exposed to excessive vibration, stress or impact from liquid bound particles. Then the sensor must be protected by additional support or deflectors as shown in diagram 7.

12) When this equipment is intended to be used in a liquid with a process temperature above 85oC it is an essential requirement that the sensor head temperature is measured to determine if the ambient air cooling is sufficient to keep the head below 80oC. With the sensor stem immersed to its maximum level in the process liquid at maximum temperature, a measurement of the temperature at the base of the head must be taken. Consideration of the ambient temperature during the measurement should be made and an evaluation of the maximum temperature the sensor head may reach should be recorded. Where the head temperature is expected to rise above 80oC then additional air cooling is required to keep the head below 80oC. When the sensor is intended for use in a dust environment the above test should be carried out with a layer of dust covering the sensor head.

13) With the F/S FP mounted in the tank the cables can be connected. The sensor head is not normally supplied with a cable gland so the installer is free to select a suitable explosion proof gland or conduit to mate with the M20X1.5 or ½”-14NPT port in the stainless steel head. When selecting components to attach to the F/S FP the following conditions should be considered.

If ambient temperature around the sensor head is greater than 65oC the connecting cable and its gland or stopping box must be able to withstand the increased temperature range. These components must have a minimum temperature specification of 5oC above the maximum possible ambient temperature and have a minimum ingress protection rating of IP68. When using conduit a stopping box must be fitted no more than 50mm from the sensor head. The stopping box and conduit must be installed in accordance with clause 13.2.2 IEC/EN60079-1.

14) A cable strain relief can be made by passing the cable through the nylon washer and fixing a cable tie tight to the cable, leaving a minimum of 70mm after the cable tie.

Diagram 6 Diagram 7

Deflector


70mm

Diagram 8

15) The connecting wires to the printed circuit board must be between 16 to 22AWG (Metric capacity 1.5mm2) with 6mm stripped ends. The earth wire should be connected to the screw point in the head using the crimp terminal provided.

EXd flameproof cable gland for enclosures with internal volume ≥ 0.5 litres and suitable for gas, zone, temperature and cable type being used. IP6x glands must be used in dust environments.

Internal Protective Earth point


16) The electrical wiring required depends on the number of switch points on the sensor stem. F/S FP with 1 to 7 reed switches. 50V Maximum.

Reconnect wires from sensor tube after mounting sensor in tank Crimp earth wire to

ring tag provided and screw to sensor head

External cable earth can be connected here

Diagram 9

Switch

1 Point float switch

3 Point Common Wire float switch

Switch #3 #2 #1

Common


Switch #2 #1

Common Switch #2 #1

2 Point/4 Wire float switch

Black wires

Switch #3 #2 #1


Black wires


Switch #4 #3 #2 #1


Black wires

Switch #5 #4 #3 #2 #1

Common 5 Point Common wire float switch

Black wire

Switch #6 #5 #4 #3 #2 #1


Switch #7 #6 #5 #4 #3 #2 #1


Green wire


Switch #4 #3 #2 #1

Common

2 Point SPDT float switch

Common

Normally open Normally closed

Normally closed Normally open

Common

Switch #1

Switch #2

Black wire

1 Point SPDT float switch

Common

Normally open Normally closed


F/S FP with 1 to 4 reed switches. 240Vac Maximum.

17) The electrical supply to all the switches must be connected through a protection device to limit excess current should a fault occur. A fast blow 1A fuse can be used to limit the total current drawn by all the switches together. If each switch point is fused individually the sum of all the fuse links must not exceed 1Amp. The fuse must be placed in a position where it protects the cable and the sensor should a fault occur. 18) After connecting the earth, supply and output wires screw the lid down hand-tight, keep applying torque by hand until the lid cannot be turned any further. Tighten the lid-locking screw so the lid cannot be accidentally removed.

E F G H

A B C D

1, 2, 3 or 4 Point 240Volt float switch

Switch #1: Terminals A and E Switch #2: Terminals B and F Switch #3: Terminals C and G Switch #4: Terminals D and H


Maintenance/Repair Any repairs or replacements parts must be carried out by the manufacturers or their appointed repair agent. Sensors with a long unsupported stem or in contact with fast moving liquids should include a maintenance plan to inspect the welded joints for fracture and fatigue. A sensor stem immersed in hot or aggressive chemicals should be checked for corrosion on a regular basis with special attention to the stem end stop weld. Where additional air cooling was required in the installation process, the effectiveness of the cooling should be checked as described in section 12. There are no fuses contained inside the sensor. See section 17 regarding fuse location. The three flameproof threads as show in diagram 10, and there interconnecting parts must be clean and free from dust or debris before assembly. Damage to flameproof threads must not be repaired, contact Deeter Electronics for replacements. The Oring under the head cover should be inspected for damage. Remove dust from devices with large mounting flange or plug.

Storage Store in dry conditions without strong magnetic influence. Protect the float from impact.

Transport Transport in rigid container with sensor head supported. Support sensor stem evenly and limit the float from moving along the stem. Protect float sides from impact by supporting sensor stem in the middle of the packing. Remove packing material from around the float to avoid secondary impact to the float. The float must not be used to support the stem.

Flameproof threaded joints

Diagram 10

IECEx Certificate of Conformity

INTERNATIONAL ELECTROTECHNICAL COMMISSIONIEC Certification Scheme for Explosive Atmospheres

for rules and details of the IECEx Scheme visit www.iecex.com

Certificate No.: IECEx EXV 17.0030X Issue No: 0 Certificate history:Issue No. 0 (2017-12-19)

Status: Current

Date of Issue: 2017-12-19

Applicant: Deeter Electronics LimitedDeeter House, Valley Road,Hughenden Valley,High Wycombe,Bucks,HP14 4LWUnited Kingdom

Equipment: Liquid Vertical Continuous Sensor, Flameproof (LVCS FP) and Float Switch, Flameproof(F/S FP)

Optional accessory:

Type of Protection: Equipment protection by flameproof enclosure "d", Equipment with EPL Ga and Equipment dust ignition protection byenclosure "t"

Marking:Ex db IIC T* Ga/Gb or Ex db IIC T* Gb

Ex tb IIIC *°C Db

Approved for issue on behalf of the IECExCertification Body:

S Clarke CEng MSc MIET

Position: Certification Manager

Signature:(for printed version)

Date:

1. This certificate and schedule may only be reproduced in full.2. This certificate is not transferable and remains the property of the issuing body.3. The Status and authenticity of this certificate may be verified by visiting the Official IECEx Website.

Certificate issued by:

ExVeritas LimitedUnits 16-18 Abenbury Way

Wrexham Ind. Est.Wrexham LL 139UZ

United Kingdom

Page 1 of 5

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Certificate No: IECEx EXV 17.0030X Issue No: 0


Manufacturer: Deeter Electronics LimitedDeeter House, Valley Road,Hughenden Valley,High Wycombe, Bucks, HP14 4LWUnited Kingdom

Additional Manufacturing location(s):

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with theIEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed andfound to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx SchemeRules, IECEx 02 and Operational Documents as amended.

STANDARDS:

The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was foundto comply with the following standards:

IEC 60079-0 : 2011Edition:6.0

Explosive atmospheres - Part 0: General requirements

IEC 60079-1 : 2014-06Edition:7.0

Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"

IEC 60079-26 : 2014-10Edition:3.0

Explosive atmospheres – Part 26: Equipment with Equipment Protection Level (EPL) Ga

IEC 60079-31 : 2013Edition:2

Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure "t"

This Certificate does not indicate compliance with electrical safety and performance requirements other than those expressly included in the

Standards listed above.

TEST & ASSESSMENT REPORTS:

A sample(s) of the equipment listed has successfully met the examination and test requirements as recorded in

Test Report:

GB/EXV/ExTR17.0029/00

Quality Assessment Report:

GB/SIR/QAR12.0004/05

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Schedule

EQUIPMENT:

Equipment and systems covered by this certificate are as follows:

The LVCS FP (Liquid Vertical Continuous Sensor) and F/S FP (Float Switch) are liquid level sensors with either a continuous analogueor switching output. The equipment comprises of a flameproof, component certified instrument housing with stainless steel level guidewhich is threaded into the housing. The level guide consists of either an 8mm or 12mm stainless steel tube which contains the sensingelectronics. The instrument housing is used for termination and mounting of optional PCB's, depending on the communication andI/O's required. The level guides can be various lengths and are mounted with up to seven stainless steel floats, each containing amagnetic ring. The equipment can be supplied with an optional threaded adaptor or equivalent gas tight seal for mounting across aboundary of two hazardous area zones.

When connected to process temperatures above 85°C, the instrument housing must be sufficiently cooled to keep it below 80°C, asdetailed in the manufacturer’s instructions.

The following temperature classes are applicable based on the process temperature which the equipment is connected to:

Model Level guide length(mm)

Sensing device Input/Output Options Process Temperature andassociated temperature class

Cable Entry sizes

LVCS 100 to 6000 Reed switch or Halleffect

Optional PCB's forvarious input/outputs

≤85°C (T5) (T100°C)

≤125°C (T4) (T135°C)

≤180°C (T3) (T200°C)

M20 x 1.5 or ½”NPT

F/S 60 to 6000 Reed switch or Halleffect

Between 1 to 7 I/O floatswitches, direct output

≤85°C (T5) (T100°C)

≤125°C (T4) (T135°C)

≤190°C (T3) (T200°C)

M20 x 1.5 or ½”NPT

SPECIFIC CONDITIONS OF USE: YES as shown below:

When intended to be operating with process temperatures above 85°C, the sensor head shall be sufficiently cooled to keep it below80°C. See installation manual for details.

Page 3 of 5




EQUIPMENT (continued):

The following ratings are applicable:

0 to 2v output. 5 to 25vdc input @ 25mA●

0 to 4 v output. 7 to 25Vdc input @ 25mA●

0 to 10v output. 14 to 28vdc input @ 35mA●

8 to 28vdc input @30mA Multi interface 4-20mA, voltage output●

0-50VDC 0-240V AC 1Amp (F/S FP reed switch only)●

Routine Tests:

Routine tests on production in accordance with clause 16 of EN/IEC 60079-1 to a pressure of at least 57.2 Bar.●

The equipment covered under this certificate incorporates previously certified components, it is therefore the responsibility of the

manufacturer to monitor the status of the certification of these components and inform ExVeritas of any changes that may affect

the explosion safety design of their products.

●

Page 4 of 5




Additional information:

Annex:

IECEx EXV 17_0030X Certificate Annex.pdf

Page 5 of 5

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Annex to: IECEx EXV 17.0030X Issue 0

Page 1 of 1 ExVeritas, Units 16-18, Abenbury Way, Wrexham Industrial Estate, FO-CB-34 V1 Wrexham, United Kingdom LL13 9UZ.

Manufacturer’s documents: Title: Drawing No.: Rev Date: LVCS FP all versions Sheet 1 of 2 D 600779 2 29/11/2017 LVCS FP all versions Sheet 2 of 2 D 600779_2 3 29/11/2017 F/S FP all versions Sheet 1 of 2 D 600781 2 29/11/2017 F/S FP all versions Sheet 2 of 2 D 600781_2 3 29/11/2017 Adaptor ½” NPT Long thread to 12mm Sheet 1 of 2 Dwg 950553 2 11/8/2017 Adaptor ½” NPT long thread to 8mm Sheet 1 of 2 Dwg 950568 2 11/8/2017